https://linux-hardware.org/?probe=db370ffb35

ThinkPad T14 Gen 4 21HD0078CD

CPU 是 13th Gen Intel(R) Core(TM) i5-1340P，在 主板 BIOS 里面，默认打开的 E 核 和 P 核，开了超线程。top 命令能够看到 16 个核。

使用 Debian sid 目前最新的 rt 内核：

uname -a

Linux atzlinux-72 6.7.12-rt-amd64 #1 SMP PREEMPT_RT Debian 6.7.12-1 (2024-04-24) x86_64 GNU/Linux

在机器启动时，有如下报错，dmesg 可以看到：

```

[Sun May 5 14:28:57 2024] intel_pstate: Intel P-state driver initializing

[Sun May 5 14:28:57 2024] BUG: scheduling while atomic: swapper/3/0/0x00010002

[Sun May 5 14:28:57 2024] Modules linked in:

[Sun May 5 14:28:57 2024] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.7.12-rt-amd64 #1 Debian 6.7.12-1

[Sun May 5 14:28:57 2024] Hardware name: LENOVO 21HD0078CD/21HD0078CD, BIOS N3QET39W (1.39 ) 10/23/2023

[Sun May 5 14:28:57 2024] Call Trace:

[Sun May 5 14:28:57 2024] <IRQ>

[Sun May 5 14:28:57 2024] dump_stack_lvl+0x47/0x60

[Sun May 5 14:28:57 2024] __schedule_bug+0x56/0x70

[Sun May 5 14:28:57 2024] __schedule+0x906/0xb30

[Sun May 5 14:28:57 2024] schedule_rtlock+0x1f/0x40

[Sun May 5 14:28:57 2024] rtlock_slowlock_locked+0x244/0xd20

[Sun May 5 14:28:57 2024] rt_spin_lock+0x43/0x60

[Sun May 5 14:28:57 2024] notify_hwp_interrupt+0x83/0x110

[Sun May 5 14:28:57 2024] intel_thermal_interrupt+0x17/0x2f0

[Sun May 5 14:28:57 2024] __sysvec_thermal+0x20/0xd0

[Sun May 5 14:28:57 2024] sysvec_thermal+0x6d/0x90

[Sun May 5 14:28:57 2024] </IRQ>

[Sun May 5 14:28:57 2024] <TASK>

[Sun May 5 14:28:57 2024] asm_sysvec_thermal+0x1a/0x20

[Sun May 5 14:28:57 2024] RIP: 0010:cpuidle_enter_state+0xcc/0x440

[Sun May 5 14:28:57 2024] Code: 8a 3e 53 ff e8 75 f3 ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 93 4b 52 ff 45 84 ff 0f 85 56 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 04 52 48 8d 04 82 49 8d

[Sun May 5 14:28:57 2024] RSP: 0000:ffffa0a4401afe90 EFLAGS: 00000246

[Sun May 5 14:28:57 2024] RAX: ffff937dcf4f44c0 RBX: ffffc0a43fade810 RCX: 0000000000000012

[Sun May 5 14:28:57 2024] RDX: 0000000000000003 RSI: 0000000066414870 RDI: 0000000000000000

[Sun May 5 14:28:57 2024] RBP: 0000000000000003 R08: ffffffffffc2f709 R09: 00000000000003f3

[Sun May 5 14:28:57 2024] R10: 0000000000000018 R11: ffff937dcf4f2fa4 R12: ffffffffb07a8cc0

[Sun May 5 14:28:57 2024] R13: 0000000066414870 R14: 0000000000000003 R15: 0000000000000000

[Sun May 5 14:28:57 2024] cpuidle_enter+0x2d/0x40

[Sun May 5 14:28:57 2024] do_idle+0x1f3/0x280

[Sun May 5 14:28:57 2024] cpu_startup_entry+0x2a/0x30

[Sun May 5 14:28:57 2024] start_secondary+0x11e/0x140

[Sun May 5 14:28:57 2024] secondary_startup_64_no_verify+0x18f/0x19b

[Sun May 5 14:28:57 2024] </TASK>

[Sun May 5 14:28:57 2024] BUG: scheduling while atomic: swapper/3/0/0x7fff0000

[Sun May 5 14:28:57 2024] Modules linked in:

[Sun May 5 14:28:57 2024] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W 6.7.12-rt-amd64 #1 Debian 6.7.12-1

[Sun May 5 14:28:57 2024] Hardware name: LENOVO 21HD0078CD/21HD0078CD, BIOS N3QET39W (1.39 ) 10/23/2023

[Sun May 5 14:28:57 2024] Call Trace:

[Sun May 5 14:28:57 2024] <TASK>

[Sun May 5 14:28:57 2024] dump_stack_lvl+0x47/0x60

[Sun May 5 14:28:57 2024] __schedule_bug+0x56/0x70

[Sun May 5 14:28:57 2024] __schedule+0x906/0xb30

[Sun May 5 14:28:57 2024] ? tick_nohz_idle_exit+0x64/0xf0

[Sun May 5 14:28:57 2024] schedule_idle+0x2a/0x50

[Sun May 5 14:28:57 2024] do_idle+0x174/0x280

[Sun May 5 14:28:57 2024] cpu_startup_entry+0x2a/0x30

[Sun May 5 14:28:57 2024] start_secondary+0x11e/0x140

[Sun May 5 14:28:57 2024] secondary_startup_64_no_verify+0x18f/0x19b

[Sun May 5 14:28:57 2024] </TASK>

[Sun May 5 14:28:57 2024] intel_pstate: HWP enabled

```

联系 T14 笔记本，内核启动有报错信息